In problems 1-3, show that each of the functions on the left is a 2-parameter family of solutions of the differential equation on its right. 1. y = c1 + c2e^-x + x^3/3, y" + y' - x^2 - 2x = 0.

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Having a hard time understanding this question (see attachment).